Enable PR builder

.github/workflows/prbuilder.yml

@@ -0,0 +1,29 @@
+name: PR Builder 
+
+on:
+  pull_request:
+    branches: master
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [2.7]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+    - name: Test with pytest
+      run: |
+        pip install pytest pipenv
+        pipenv install --system --deploy --dev
+        make test